EP2944442A3 - Hand tool having a clutch and method for forming a groove in peripheral wall of a clutch drum of a handheld power tool - Google Patents

Hand tool having a clutch and method for forming a groove in peripheral wall of a clutch drum of a handheld power tool Download PDF

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Publication number
EP2944442A3
EP2944442A3 EP15000916.5A EP15000916A EP2944442A3 EP 2944442 A3 EP2944442 A3 EP 2944442A3 EP 15000916 A EP15000916 A EP 15000916A EP 2944442 A3 EP2944442 A3 EP 2944442A3
Authority
EP
European Patent Office
Prior art keywords
groove
peripheral wall
clutch
clutch drum
corresponds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15000916.5A
Other languages
German (de)
French (fr)
Other versions
EP2944442B1 (en
EP2944442A2 (en
Inventor
Günter Wolf
Marcel FÖRSTER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andreas Stihl AG and Co KG
Original Assignee
Andreas Stihl AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andreas Stihl AG and Co KG filed Critical Andreas Stihl AG and Co KG
Publication of EP2944442A2 publication Critical patent/EP2944442A2/en
Publication of EP2944442A3 publication Critical patent/EP2944442A3/en
Application granted granted Critical
Publication of EP2944442B1 publication Critical patent/EP2944442B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/62—Clutch-bands; Clutch shoes; Clutch-drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
    • B27B17/10—Transmission clutches specially designed for chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
    • F16D67/02—Clutch-brake combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/644—Hub construction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Operated Clutches (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

Ein handgeführtes Arbeitsgerät besitzt einen Antriebsmotor (7), der über eine Kupplung (21) ein Werkzeug antreibt. Die Kupplung (21) besitzt eine Kupplungstrommel (22) mit einer Umfangswand (28). Das Arbeitsgerät besitzt ein angetriebenes Element, das über ein Mitnahmeglied (34) angetrieben ist. Das Mitnahmeglied (34) ragt in eine Nut (35) in der Umfangswand (28). Die Nut (35) erstreckt sich von einer Stirnseite (43) der Umfangswand (28) in die Umfangswand (28) und weist einen Nutgrund (44) und zwei einander gegenüberliegende Nutseiten (45, 46) auf. Um eine hohe Standzeit der Kupplungstrommel (22) zu erreichen, ist vorgesehen, dass die Umfangswand (28) am Nutgrund (44) einen verdickten Bereich (47) aufweist, dessen Dicke (a) mindestens etwa 110% der Dicke (c) der Umfangswand (28) an den Nutseiten (44, 45) entspricht. Für ein Verfahren zur Herstellung einer Nut (35) in der Umfangswand (28) einer Kupplungstrommel (22) ist vorgesehen, dass in einem ersten Schritt die Nut (35) mit einer Tiefe (k), die etwa 75% bis etwa 95% der Solltiefe (i) der Nut (35) entspricht, und mit einer Breite (1), die etwa 50% bis etwa 110% der Sollbreite (e) entspricht, ausgestanzt wird. In einem nachfolgenden zweiten Schritt wird der Nutgrund (44) der Nut (35) bis zum Erreichen der Solltiefe (i) plastisch verformt.

Figure imgaf001
Figure imgaf002
A hand-held implement has a drive motor (7) which drives a tool via a coupling (21). The clutch (21) has a clutch drum (22) with a peripheral wall (28). The implement has a driven element which is driven via a driving member (34). The driving member (34) protrudes into a groove (35) in the peripheral wall (28). The groove (35) extends from an end face (43) of the peripheral wall (28) in the peripheral wall (28) and has a groove bottom (44) and two mutually opposite groove sides (45, 46). In order to achieve a long service life of the clutch drum (22), it is provided that the peripheral wall (28) on the groove base (44) has a thickened region (47) whose thickness (a) at least about 110% of the thickness (c) of the peripheral wall (28) corresponds to the groove sides (44, 45). For a method for producing a groove (35) in the peripheral wall (28) of a clutch drum (22), it is provided that in a first step the groove (35) having a depth (k) of about 75% to about 95% of the Target depth (i) of the groove (35) corresponds, and with a width (1), which corresponds to about 50% to about 110% of the desired width (e) is punched out. In a subsequent second step, the groove bottom (44) of the groove (35) is plastically deformed until reaching the desired depth (i).
Figure imgaf001
Figure imgaf002
EP15000916.5A 2014-04-05 2015-03-28 Hand tool having a clutch and method for forming a groove in peripheral wall of a clutch drum of a handheld power tool Active EP2944442B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014004930.2A DE102014004930A1 (en) 2014-04-05 2014-04-05 Hand-held implement with a coupling and method for producing a groove in the peripheral wall of a clutch drum of a hand-held implement

Publications (3)

Publication Number Publication Date
EP2944442A2 EP2944442A2 (en) 2015-11-18
EP2944442A3 true EP2944442A3 (en) 2015-12-16
EP2944442B1 EP2944442B1 (en) 2017-05-10

Family

ID=52807506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15000916.5A Active EP2944442B1 (en) 2014-04-05 2015-03-28 Hand tool having a clutch and method for forming a groove in peripheral wall of a clutch drum of a handheld power tool

Country Status (4)

Country Link
US (1) US9518616B2 (en)
EP (1) EP2944442B1 (en)
CN (1) CN104976240B (en)
DE (1) DE102014004930A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160122074A (en) 2015-04-13 2016-10-21 메르크 파텐트 게엠베하 Liquid-crystalline medium and liquid-crystal display comprising the same
RO133849A2 (en) * 2018-07-09 2020-01-30 Universitatea "Ştefan Cel Mare" Din Suceava Clutch-type thermocouple
CN110587721B (en) * 2019-10-14 2024-03-15 浙江中坚科技股份有限公司 Chain saw clutch and saw chain heat abstractor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341834A1 (en) * 1983-11-19 1985-05-30 Fa. Andreas Stihl, 7050 Waiblingen MOTOR CHAIN SAW
WO2009082276A1 (en) * 2007-12-21 2009-07-02 Husqvarna Ab Size and weight saving clutch drum of a centrifugal clutch
US20130151126A1 (en) * 2011-12-10 2013-06-13 Andreas Stihl Ag & Co. Kg Device and method for operating a hand-held working apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3488517B2 (en) 1994-09-29 2004-01-19 ジヤトコ株式会社 Interlocking structure of connecting shell
US7980324B2 (en) * 2006-02-03 2011-07-19 Black & Decker Inc. Housing and gearbox for drill or driver
US20070193850A1 (en) * 2006-02-22 2007-08-23 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch housing with openings to engage a clutch plate
DE102007004169A1 (en) * 2006-02-22 2007-08-23 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Clutch housing for vehicle transmission has cylindrical outer profile with oil pumping apertures
US8459430B2 (en) * 2008-03-27 2013-06-11 Albert James Youngwerth, JR. Automatic clutch employing expanding friction disk and an adjustable pressure plate
CN103180189B (en) * 2010-10-22 2015-06-03 丰田自动车株式会社 Control device for vehicle drive apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3341834A1 (en) * 1983-11-19 1985-05-30 Fa. Andreas Stihl, 7050 Waiblingen MOTOR CHAIN SAW
WO2009082276A1 (en) * 2007-12-21 2009-07-02 Husqvarna Ab Size and weight saving clutch drum of a centrifugal clutch
US20130151126A1 (en) * 2011-12-10 2013-06-13 Andreas Stihl Ag & Co. Kg Device and method for operating a hand-held working apparatus

Also Published As

Publication number Publication date
EP2944442B1 (en) 2017-05-10
EP2944442A2 (en) 2015-11-18
CN104976240A (en) 2015-10-14
US9518616B2 (en) 2016-12-13
US20150285315A1 (en) 2015-10-08
CN104976240B (en) 2018-12-14
DE102014004930A1 (en) 2015-10-08

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